#include "znx_murmur_hash.h"


uint32_t
znx_murmur_hash2(const u_char *data, size_t len)
{
    uint32_t  h, k;

    h = (uint32_t)(0 ^ len);

    while (len >= 4) {
        k  = data[0];
        k |= (uint32_t)(data[1] << 8);
        k |= (uint32_t)(data[2] << 16);
        k |= (uint32_t)(data[3] << 24);

        k *= 0x5bd1e995;
        k ^= (uint32_t)(k >> 24);
        k *= 0x5bd1e995;

        h *= 0x5bd1e995;
        h ^= k;

        data += 4;
        len -= 4;
    }

    switch (len) {
    case 3:
        h ^= (uint32_t)(data[2] << 16);
        /* fall through */
    case 2:
        h ^= (uint32_t)(data[1] << 8);
        /* fall through */
    case 1:
        h ^= data[0];
        h *= 0x5bd1e995;
    }

    h ^= h >> 13;
    h *= 0x5bd1e995;
    h ^= h >> 15;

    return h;
}

